Dec 04 21:03:45.840 INFO checking chc4/minesweeper against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 21:03:45.840 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-4/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +1df97983eb2057dc6a8f7eb364e263b51ae23230-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 04 21:03:46.471 INFO [stdout] 7b313f2d38fbb9bc80e4a53f706d747c35ea3cedf24912364c3ee41607a23fec
Dec 04 21:03:46.477 INFO running `"docker" "start" "-a" "7b313f2d38fbb9bc80e4a53f706d747c35ea3cedf24912364c3ee41607a23fec"`
Dec 04 21:03:47.938 INFO [stderr] usermod: no changes
Dec 04 21:03:48.043 INFO [stderr]     Checking minesweeper v0.1.0 (/source)
Dec 04 21:03:48.821 INFO [stderr] warning: unused import: `std::io`
Dec 04 21:03:48.821 INFO [stderr]  --> src/main.rs:1:5
Dec 04 21:03:48.821 INFO [stderr]   |
Dec 04 21:03:48.821 INFO [stderr] 1 | use std::io;
Dec 04 21:03:48.821 INFO [stderr]   |     ^^^^^^^
Dec 04 21:03:48.821 INFO [stderr]   |
Dec 04 21:03:48.821 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 21:03:48.821 INFO [stderr] 
Dec 04 21:03:49.063 INFO [stderr] warning: unused variable: `stdin`
Dec 04 21:03:49.063 INFO [stderr]    --> src/main.rs:183:9
Dec 04 21:03:49.063 INFO [stderr]     |
Dec 04 21:03:49.063 INFO [stderr] 183 |     let stdin = std::io::stdin();
Dec 04 21:03:49.063 INFO [stderr]     |         ^^^^^ help: consider using `_stdin` instead
Dec 04 21:03:49.063 INFO [stderr]     |
Dec 04 21:03:49.063 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 04 21:03:49.063 INFO [stderr] 
Dec 04 21:03:49.063 INFO [stderr] warning: unused variable: `i`
Dec 04 21:03:49.063 INFO [stderr]   --> src/main.rs:56:13
Dec 04 21:03:49.063 INFO [stderr]    |
Dec 04 21:03:49.063 INFO [stderr] 56 |         for i in 0..y {
Dec 04 21:03:49.063 INFO [stderr]    |             ^ help: consider using `_i` instead
Dec 04 21:03:49.063 INFO [stderr] 
Dec 04 21:03:49.063 INFO [stderr] warning: unused variable: `j`
Dec 04 21:03:49.063 INFO [stderr]   --> src/main.rs:58:17
Dec 04 21:03:49.063 INFO [stderr]    |
Dec 04 21:03:49.063 INFO [stderr] 58 |             for j in 0..x {
Dec 04 21:03:49.063 INFO [stderr]    |                 ^ help: consider using `_j` instead
Dec 04 21:03:49.063 INFO [stderr] 
Dec 04 21:03:49.063 INFO [stderr] warning: unused variable: `count`
Dec 04 21:03:49.063 INFO [stderr]    --> src/main.rs:108:36
Dec 04 21:03:49.063 INFO [stderr]     |
Dec 04 21:03:49.063 INFO [stderr] 108 |         if let Slot::Empty(visible,count) = slot {
Dec 04 21:03:49.063 INFO [stderr]     |                                    ^^^^^ help: consider using `_count` instead
Dec 04 21:03:49.063 INFO [stderr] 
Dec 04 21:03:49.071 INFO [stderr] warning: variable does not need to be mutable
Dec 04 21:03:49.071 INFO [stderr]   --> src/main.rs:30:9
Dec 04 21:03:49.071 INFO [stderr]    |
Dec 04 21:03:49.071 INFO [stderr] 30 |     let mut stdin = std::io::stdin();
Dec 04 21:03:49.071 INFO [stderr]    |         ----^^^^^
Dec 04 21:03:49.071 INFO [stderr]    |         |
Dec 04 21:03:49.071 INFO [stderr]    |         help: remove this `mut`
Dec 04 21:03:49.071 INFO [stderr]    |
Dec 04 21:03:49.071 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 21:03:49.071 INFO [stderr] 
Dec 04 21:03:49.087 INFO [stderr] warning: unused import: `std::io`
Dec 04 21:03:49.087 INFO [stderr]  --> src/main.rs:1:5
Dec 04 21:03:49.087 INFO [stderr]   |
Dec 04 21:03:49.087 INFO [stderr] 1 | use std::io;
Dec 04 21:03:49.087 INFO [stderr]   |     ^^^^^^^
Dec 04 21:03:49.087 INFO [stderr]   |
Dec 04 21:03:49.087 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 21:03:49.087 INFO [stderr] 
Dec 04 21:03:49.199 INFO [stderr] warning: unused variable: `stdin`
Dec 04 21:03:49.199 INFO [stderr]    --> src/main.rs:183:9
Dec 04 21:03:49.199 INFO [stderr]     |
Dec 04 21:03:49.199 INFO [stderr] 183 |     let stdin = std::io::stdin();
Dec 04 21:03:49.199 INFO [stderr]     |         ^^^^^ help: consider using `_stdin` instead
Dec 04 21:03:49.199 INFO [stderr]     |
Dec 04 21:03:49.199 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 04 21:03:49.199 INFO [stderr] 
Dec 04 21:03:49.199 INFO [stderr] warning: unused variable: `i`
Dec 04 21:03:49.199 INFO [stderr]   --> src/main.rs:56:13
Dec 04 21:03:49.199 INFO [stderr]    |
Dec 04 21:03:49.199 INFO [stderr] 56 |         for i in 0..y {
Dec 04 21:03:49.199 INFO [stderr]    |             ^ help: consider using `_i` instead
Dec 04 21:03:49.199 INFO [stderr] 
Dec 04 21:03:49.199 INFO [stderr] warning: unused variable: `j`
Dec 04 21:03:49.199 INFO [stderr]   --> src/main.rs:58:17
Dec 04 21:03:49.199 INFO [stderr]    |
Dec 04 21:03:49.199 INFO [stderr] 58 |             for j in 0..x {
Dec 04 21:03:49.199 INFO [stderr]    |                 ^ help: consider using `_j` instead
Dec 04 21:03:49.199 INFO [stderr] 
Dec 04 21:03:49.211 INFO [stderr] warning: unused variable: `count`
Dec 04 21:03:49.211 INFO [stderr]    --> src/main.rs:108:36
Dec 04 21:03:49.211 INFO [stderr]     |
Dec 04 21:03:49.211 INFO [stderr] 108 |         if let Slot::Empty(visible,count) = slot {
Dec 04 21:03:49.211 INFO [stderr]     |                                    ^^^^^ help: consider using `_count` instead
Dec 04 21:03:49.211 INFO [stderr] 
Dec 04 21:03:49.219 INFO [stderr] warning: variable does not need to be mutable
Dec 04 21:03:49.219 INFO [stderr]   --> src/main.rs:30:9
Dec 04 21:03:49.219 INFO [stderr]    |
Dec 04 21:03:49.219 INFO [stderr] 30 |     let mut stdin = std::io::stdin();
Dec 04 21:03:49.219 INFO [stderr]    |         ----^^^^^
Dec 04 21:03:49.219 INFO [stderr]    |         |
Dec 04 21:03:49.219 INFO [stderr]    |         help: remove this `mut`
Dec 04 21:03:49.219 INFO [stderr]    |
Dec 04 21:03:49.219 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 21:03:49.219 INFO [stderr] 
Dec 04 21:03:49.283 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.32s
Dec 04 21:03:49.286 INFO [stderr] su: No module specific data is present
Dec 04 21:03:49.996 INFO running `"docker" "inspect" "7b313f2d38fbb9bc80e4a53f706d747c35ea3cedf24912364c3ee41607a23fec"`
Dec 04 21:03:50.235 INFO running `"docker" "rm" "-f" "7b313f2d38fbb9bc80e4a53f706d747c35ea3cedf24912364c3ee41607a23fec"`
Dec 04 21:03:50.555 INFO [stdout] 7b313f2d38fbb9bc80e4a53f706d747c35ea3cedf24912364c3ee41607a23fec